High Performance Computing Cluster Interconnect - Extreme Networks
High Performance Computing Cluster Interconnect - Extreme Networks
High Performance Computing Cluster Interconnect - Extreme Networks
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<strong>Extreme</strong> <strong>Networks</strong> White Paper: <strong>High</strong> <strong>Performance</strong> <strong>Computing</strong> <strong>Cluster</strong> <strong>Interconnect</strong>The Lippis Report went on to make the following observations:• “The above latency measures are the lowest we have measured for core switches by a large degree. The BDX8forwards packets ten to six times faster than other core switches we’ve tested.”• “The BDX8 delivered the fastest IP Multicast performance measured to date being able to forward IP Multicastpackets between 3 and 13 times faster than previous core switch measures of similar 10 GbE density.”• “This measurement also breaks all previous records as the BDX8 is between 2 and 10 times faster in forwardingcloud based protocols under load. In fact, the <strong>Extreme</strong> <strong>Networks</strong> BDX8 was between 2 and 9 times faster atforwarding packets over a wide range of frame sizes than previous core switch measurements conducted duringLippis/Ixia iSimCity test of core switches from Alcatel-Lucent, Arista and Juniper.”• “In other words, the BDX8 is the fastest core switch we have tested with the lowest latency measurements.”A typical BlackDiamond X8 and Summit X670 deployment in an HPCC environment is below. Total two-tier networklatency (Summit X670 -> BlackDiamond X8 -> Summit X670) will be sub-5 µsec at average packet sizes.Campus NetworkCore LayerBlackDiamond ®X8BlackDiamondX8Access LayerTop of the RackSummit ® X670 Summit X670 Summit X670 Summit X670 Summit X670 Summit X670ServerRackServerRackServerRackServerRackServerRackServerRack5597-01In summary, cluster interconnect is an important decision. Ethernet is quickly becoming the de-facto standard dueto not only the CapEx savings but more importantly the OpEx costs it takes to manage a separate network. Thefact that Ethernet is built upon open standards, means customers are assured of interoperability with the rest of thenetwork and additional flexibility as the cluster grows will make it the best option. Finally, with the advancements inlatency and throughput, Ethernet becomes the only logical choice.5© 2012 <strong>Extreme</strong> <strong>Networks</strong>, Inc. All rights reserved.
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